what is the purpose of using measures of variability?

Answers

Answer 1
Variability describes how far apart data points lie from each other and from the center of distribution. Along with measures of central tendency, measure of variability give you descriptive statistics that summarize your data. Variability is also referred to as spread, scatter or dispersion.


Answer: it gives you descriptive statistics that summarize your data.

Related Questions

can anyone heelp me pls

Answers

Lotion - liquid

Suspension- semisolid

Capsule- Solid

Hope this helps :)

A store is having a 20% off sale on coats. What will the sale price be for a coat that originally cost $248

Answers

248*.20
49.60
248-49.60
$198.40 is the sale price
248 x 0.20= 49.60 off
Now take 248 - 49.60 = $198.40
The sale price is $198.40

Given (x – 7)2 = 36, select the values of x.

Answers

Regroup
2(x-7)=36
Divide both sides by two
X-7= 36/2
Simplify 36/2 to 18
X-7=18
Add 7 to both sides
X=18+7
Simplify 18+7 to 25
X = 25

The values of the variable "x" which satisfy the equation (x – 7)² = 36 are x = 13 and x = 1.

To find the values of x in the expression (x - 7)² = 36, we need to solve for x using the given equation.

We Expand the square of the binomial: (x - 7)² as x² - 14x + 49,

Now, We Set up the equation as : x² - 14x + 49 = 36,

Next, We Subtract 36 from both sides: x² - 14x + 13 = 0,

Factoring the quadratic equation: (x - 13)(x - 1) = 0,

At last, Applying the zero-product property: x - 13 = 0 or x - 1 = 0,

Solving for x, We get : x = 13 or x = 1.

Therefore, The required values of "x" are x = 13 and x = 1.

Learn more about Equation here

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The given question is incomplete, the complete question is

Given the equation (x – 7)² = 36, Find the values of x.

After extensive measurements of the time necessary to complete the first homework assignment, a teacher determines that there is a population mean of 100 and a standard deviation of 20. If she samples a class of 60 students and calculates a mean of 96 minutes, what is the z statistic

Answers

Answer: The guideline doesn’t account for students who may need to spend more—or less—time on assignments. In class, teachers can make adjustments to support struggling students, but at home, an assignment that takes one student 30 minutes to complete may take another twice as much time—often for reasons beyond their control.

Step-by-step explanation:

Hope this helps!

square root of 55 to the nearest integer

Answers

The nearest integer is 7 because the nearest perfect square root is 49. Answer is 7-8
7 good luck with your assignment

Complete the table of values for y=x2-x-5.​

Answers

Answer:

when -2 , y = 1

when 0, y = -5

when 2, y = -3

when 3, y = 1

when 4, y = 7

7. The ratio of the base to height of a triangle is 3:5. If the area of this triangle is 30, find the lengths of the base and height.​

Answers

Answer:

Base= 6

Height= 10

Step-by-step explanation:

Area of triangle= ½ ×base ×height

Let the base be 3x and the height be 5x.

Given that the area is 30,

½ ×base ×height= 30

½(3x)(5x)= 30

Multiply both sides by 2:

3x(5x)= 60

15x²= 60

x²= 60 ÷15

x²= 4

Square root both sides:

[tex]x = \sqrt{4} [/tex]

x= 2

(reject x= -2 since length has a positive value)

Length of base

= 3x

= 3(2)

= 6

Length of height

= 5x

= 5(2)

= 10

The area of a square equals the square of a length of the side of the square. The perimeter equals the sum of the lengths of all four sides. The sum of the areas of two squares is 65 while the difference in their areas is 33. Find the sum of their perimeters.

The sum of the perimeters is [x]

Answers

Answer:Each side of x would be 7 and each side of y would be 4.

Step-by-step explanation:

Is it fair to give only 5 points for such a big question?​

Answers

Answer:

No

Step-by-step explanation:

Because you (or whoever asks) shouldn't give only 5 points to such a big question, because whoever answers the question might have worked really hard to answer it while you just gave them only 5 points...its not worth answering of only 5 points. In my opinion at least ‍♀️

Hope what I said makes sense :)

A parking pass is $60 for a month or $5 for a day. At what point would it make more sense to purchase the monthly pass?

Answers

it would make more sense to purchase the monthly pass at the middle of second week because if it’s $5 per day for seven days it would be $35 per week. therefore, by the middle of the week it would already $60.

How many distinct lines of symmetry does the image have?
The image has rotational symmetry after rotating every

Answers

Answer:

1) 6 lines of symmetry

2) 360 ÷ 6 = 60°

Which number line correctly shows the graphing of point A,2 1/2 point b -2.75 and point c -0.25

Answers

Answer:

C

Step-by-step explanation:

There are two negative numbers must be before zero and one positive number must be after zero

A = 2 1/2 = 2.5 between 2 and 3

B = -2.75 between -2.5 and -3

C = -0.25 between 0 and -0.5

A vendor who sold bread at farmers' markets counted the number of leftover loaves at the
end of each day.
Day
Loaves of leftover bread
Leftover loaves
Tuesday
22
Wednesday 24
Thursday
20
Friday
22
Saturday
27
According to the table, what was the rate of change between Wednesday and Thursday?

Answers

Answer:

Step-by-step explanation:

4 loaves

Answer:

- 4

Step-by-step explanation:

Given:

Wednesday = day 3 = 24 loavesThursday = day 4 = 20 loaves

Rate of change:

Difference in the number of loaves / difference in the number of days(20 - 24)/(4 - 3) =- 4/1 = - 4

four snack bars contain 0,2 34% 6/20 and 13/50 which snack bar contains the most amount of calories from fat

Answers

Answer:

The second snack bar  (34%)..

Step-by-step explanation:

Convert all to %:

0.2  * 100 = 20%

6/20 = 30%

13/50 = 26%

34%   <-------- This one.

Answer:

34%

Step-by-step explanation:

34%=34/100 =O.34 which is the greatest decimal compared to the rest

Guys please help out with this asap ! thanks

Answers

you’re gonna wanna round up both sides of your equation which will give u 224, then divide both by 16 which will leave u with 178

What is the slope of the line that passes through the points 10, six and nine, five? Write your answer in simplest form

Answers

Answer:

y=x-4

Step-by-step explanation:

If you plug in the points into a graph, you can see that the slope is 1.

You can go down one and the left one, eventually you will find the y-intercept at (0,-4)

DO NOW: What is the surface area of the cube? 4 in 4 in 4 in​

Answers

Answer:

96 in^2.

Step-by-step explanation:

It has 6 surfaces each of area 4*4 = 16

Answer is 6*16 = 96.

A? B? C? D?..................................................

Answers

Answer:

A.

Step-by-step explanation:

yan na yannnnnnnnnnnnnnnn

The answer should be A.

HELPPPPPPPPPPPPPPPPPPPPPPPPPPP

Answers

cuál de los siguientes documentos es más Útil para construir carretera

The diagram below shows a small ant and an ant find the difference in length of the two large ants . Help pls

Answers

Answer:

yay

Step-by-step explanation:

PLEASE HELP ITS MATH THANK YOUUUU

Answers

The answe is 16 miles

in 4567 which number means ones?​

Answers

Answer:

7 means ones because it is the units

Step-by-step explanation:

4= thousand

5= hundred

6= tens

7=ones / unit

First number 4 thousand second number means hundred third numbers means tens and fourth number means ones

The area of a rectangle is x^2-4/2x in.2, and its length is (x + 2)2/2 in. Find the width.

Answers

Step-by-step explanation:

the area (length × width) is

A = (x² - 4)/2x in² = (x + 2)(x - 2)/2x

length = (x + 2)²/2 = (x + 2)(x + 2)/2

width = A/length = 2(x+2)(x-2) / 2x(x+2)(x+2) =

= (x-2)/x(x+2) = (x-2)/(x²+2x)

A photographer made a 5-inch by 8-inch print of a photo. He then made a 10-inch by 16-inch print of the same photo.

Which scale factor was used to create the larger photo from the smaller photo?

Answers

The photographer just doubled the size of the 5 x 8 in photo

State the slope for the equation.


y=5x+8


Enter you answer in the box.


Slope: m=

Answers

Answer:

Step-by-step explanation:

The y-intercept of the equation is -8.

You can test this by making X = 0 and solving algebraically. Similarly, if you make y = 0, you can solve the X value. This means X = 8/5

Co-ordinates (8/5, -8)

What are the measurements of angles x,y,z & w?


Thank you<3

Answers

Step-by-step explanation:

z°=180°-25°

z°= 155°

z°=x°=155° (vertically opposite angle).

w°=25°(alternate angle).

y°==155°(alternate angle).

hope this helps you.

Answer:

See below

Step-by-step explanation:

As AB and CD are parallel lines cut by a transversal, we have:

∠x and ∠z are congruent as vertical angles∠x and y are congruent as corresponding angles∠w is congruent with 25° as alternate interior angles

So the measures are:

m∠x = m∠y = m∠y = 180° - 25° = 155° (supplementary angles sum to 180°)m∠w = 25°

Raul works at a movie theatre. The function f(x) represents the amount of money Raul earns per ticket, where x is the number of tickets he sells. The function g(x) represents the number of tickets Raul sells per hour, where x is the number of hours he works. Show all work to find f(g(x)), and explain what f(g(x)) represents.

f(x) = 2x2 + 16
g of x equals the square root of the quantity 5 x cubed

Answers

Answer:

f(g(x)) = 15x3 + 16

Step-by-step explanation:


Please help me I suck in math

Answers

Answer:

B) [tex]-4\sqrt{10}+13[/tex]

Step-by-step explanation:

[tex]\sqrt{100}+4\sqrt{10}+3-8\sqrt{10}[/tex]

[tex]10-4\sqrt{10}+3[/tex]

[tex]13-4\sqrt{10}[/tex]

[tex]-4\sqrt{10}+13[/tex]

A tune-up automotive facility marks up its
parts by 45%. Suppose that the facility
charges its customers $2.03 for each spark
plug it sells. What is the facility's cost for each
spark plug?

Answers

Answer:  $1.40

Work Shown:

x = cost before markup

1.45x = cost after the 45% markup

1.45x = 2.03

x = (2.03)/(1.45)

x = 1.40

Need help with number 7 and eight

Answers

Answer:

7 is d

Step-by-step explanation:

8 is b. In 7 all the sum of angles will equals 360 degres

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